WPT
wpt / css / css-backgrounds / parsing / background-size-computed.html
Spec: CSS Backgrounds ↗
Runs: Chrome 155.0.8043.0 (wpt@b89af32bc, 2026-09-05) | Firefox 157.0a1 (wpt@b89af32bc, 2026-09-05) | Safari 251 preview (wpt@b89af32bc, 2026-09-05) | Ladybird 1.0-f437c (wpt@b89af32bc, 2026-09-06) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 12/16 | 14/16 | 16/16 | 12/16 | 16/16 | 16/16 |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Property background-size value '1px' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value '1px auto' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value '2% 3%' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'auto' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'auto auto' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'auto 4%' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'contain' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'cover' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'calc(10px + 0.5em) calc(10px - 0.5em)' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'calc(10px - 0.5em) calc(10px + 0.5em)' | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'auto 1px, 2% 3%, contain' | FAIL | PASS | PASS | FAIL | PASS | PASS |
| Property background-size value 'auto' multiple base values | FAIL | FAIL | PASS | FAIL | PASS | PASS |
| Property background-size value 'auto, auto' multiple base values | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value 'auto, auto, auto' multiple base values | FAIL | PASS | PASS | FAIL | PASS | PASS |
| Property background-size value 'auto, 100%' multiple base values | PASS | PASS | PASS | PASS | PASS | PASS |
| Property background-size value '100%' multiple base values | FAIL | FAIL | PASS | FAIL | PASS | PASS |